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Trichloroacetic acid in the foliage of forest trees

✍ Scribed by Frank, Hartmut ;Vincon, Antje ;Reiss, Johannes ;Scholl, Harald

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
413 KB
Volume
13
Category
Article
ISSN
0935-6304

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✦ Synopsis

Abstract

Trichloroacetic acid (TCA) is an atmospheric oxidation product of airborne C~2~‐chlorocarbons and a widespread air pollutant. It was widely used as a herbicide in the fifties and sixties, in some countries, still today. It occurs in the foliage of conifers and deciduous trees of mountain forests in Germany, e. g. the Black Forest, the Northern Alps or the Erzgebirge. Quantitative determination in the ppb‐range is achieved by gas chromatography using thick film capillary columns and electron‐capture detection. The levels in spruce needles at two forest sites correlate with the extent of needle loss. The data are supportive of the hypothesis that TCA is causally involved in the induction of mountain forest decline.

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